<template>
	<div class="params">
		<!-- 面包屑导航 -->
		<el-breadcrumb separator=">">
			<el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
			<el-breadcrumb-item>商品管理</el-breadcrumb-item>
			<el-breadcrumb-item>参数分类</el-breadcrumb-item>
		</el-breadcrumb>

		<!-- 卡片视图 -->
		<el-card class="car_dr">
			<!-- 警告提示框 -->
			<el-alert title="注意:只允许为第三级分类设置相关参数!" type="warning" show-icon :closable="false"></el-alert>

			<!-- 选择商品分类 -->
			<el-row class="cat_opt">
				<el-col>
					<span >选择商品分类：</span>
					<el-cascader v-model="selectedCateKeys" :options="catelist" :props="cateProps" expand-trigger="hover" @change="handleChange"></el-cascader>
				</el-col>
			</el-row>
			<!-- tab 页签区域 -->
			
			<el-tabs v-model="activeName" @tab-click="handleClick">
			   <el-tab-pane label="动态参数" name="many">
					 <el-button type="primary" size="mini" :disabled="isBtnDisabled" @click="addDialogVisible = true">添加参数</el-button>
					 
					 <!-- 动态参数表格 -->
					 <el-table :data="manyTableData" border stripe>
						 <!-- 展开行 -->
						 <el-table-column type="expand">
							 <template slot-scope="scope">
								 <el-tag v-for="(item,i) in scope.row.attr_vals" :key="i" closable @close="handleClose(scope.row,i)">{{item}}</el-tag>
								 <el-input
								   class="input-new-tag"
								   v-if="scope.row.inputVisible"
								   v-model="scope.row.inputValue"
								   ref="saveTagInput"
								   size="small"
								   @keyup.enter.native="handleInputConfirm(scope.row)"
								   @blur="handleInputConfirm(scope.row)"
								 >
								 </el-input>
								 <el-button v-else class="button-new-tag" size="small" @click="showInput(scope.row)">+ New Tag</el-button>
							 </template>
						 </el-table-column>
						 <!-- 索引列 -->
						 <el-table-column type="index"></el-table-column>
						 <el-table-column label="参数名称" prop="attr_name"></el-table-column>
						 <el-table-column label="操作">
							 <template slot-scope="scope">
								 <el-button size="mini" type="primary" icon="el-icon-edit" @click="showEditDialog(scope.row.attr_id)">编辑</el-button>
								 <el-button size="mini" type="danger" icon="el-icon-delete" @click="removeParams(scope.row.attr_id)">删除</el-button>
							 </template>
						 </el-table-column>
					 </el-table>
				 </el-tab-pane>
				 
			   <el-tab-pane label="静态属性" name="only">
					 <el-button type="primary" size="mini" :disabled="isBtnDisabled"  @click="addDialogVisible = true"> 添加属性</el-button>
					 
					 <!-- 静态属性表格 -->
					 <el-table :data="nolyTableData" border stripe>
					 	 <!-- 展开行 -->
					 	 <el-table-column type="expand">
							 <template slot-scope="scope">
							 	<el-tag v-for="(item,i) in scope.row.attr_vals" :key="i" closable @close="handleClose(scope.row,i)">{{item}}</el-tag>
								
								<el-input
								  class="input-new-tag"
								  v-if="scope.row.inputVisible"
								  v-model="scope.row.inputValue"
								  ref="saveTagInput"
								  size="small"
								  @keyup.enter.native="handleInputConfirm(scope.row)"
								  @blur="handleInputConfirm(scope.row)"
								>
								</el-input>
								<el-button v-else class="button-new-tag" size="small" @click="showInput(scope.row)">+ New Tag</el-button>
							 </template>
						 </el-table-column>
					 	 <!-- 索引列 -->
					 	 <el-table-column type="index"></el-table-column>
					 	 <el-table-column label="属性名称" prop="attr_name"></el-table-column>
					 	 <el-table-column label="操作">
							 <template slot-scope="scope">
							 	 <el-button size="mini" type="primary" icon="el-icon-edit" @click="showEditDialog(scope.row.attr_id)">编辑</el-button>
							 	 <el-button size="mini" type="danger" icon="el-icon-delete" @click="removeParams(scope.row.attr_id)">删除</el-button>
							 </template>
						 </el-table-column>
					 </el-table>
				 </el-tab-pane>
			</el-tabs>
		</el-card>
		<!-- 添加参数的对话框 -->
		<el-dialog
		  :title="'添加' + titleText"
		  :visible.sync="addDialogVisible"
		  width="50%"
			@close="addDialogClosed"
		  >
			<!-- 主体区域 -->
		  <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px">
		    <el-form-item :label="titleText" prop="attr_name">
		      <el-input v-model="addForm.attr_name"></el-input>
		    </el-form-item>
			</el-form>
			
			<!-- 按钮区域 -->
		  <span slot="footer" class="dialog-footer">
		    <el-button @click="addDialogVisible = false">取 消</el-button>
		    <el-button type="primary" @click="addParams">确 定</el-button>
		  </span>
		</el-dialog>
		
		<!-- 编辑的对话框 -->
		<el-dialog
		  title="编辑"
		  :visible.sync="editDialogVisible"
		  width="50%"
			@close="editDialogClosed"
		  >
			<!-- 主体区域 -->
		  <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="100px">
		    <el-form-item :label="titleText" prop="attr_name">
		      <el-input v-model="editForm.attr_name"></el-input>
		    </el-form-item>
			</el-form>
			
			<!-- 按钮区域 -->
		  <span slot="footer" class="dialog-footer">
		    <el-button @click="editDialogVisible = false">取 消</el-button>
		    <el-button type="primary" @click="editParams">确 定</el-button>
		  </span>
		</el-dialog>
	</div>
</template>

<script>
	export default {
		data() {
			return {
				//商品分类列表
				catelist: [],
				//存放选择三级商品的Id
				selectedCateKeys: [],
				// 级联配置
				cateProps: {
					value: 'cat_id',
					label: 'cat_name',
					children: 'children'
				},
				//tab 页签的位置
				activeName:'many',
				//动态参数的数据
				manyTableData:[],
				//静态属性的数据
				nolyTableData:[],
				//控制添加对话框的显示与隐藏
				addDialogVisible:false,
				//添加参数的数据对象
				addForm:{
					attr_name:''
				},
				//添加表单的验证规则
				addFormRules:{
					attr_name:[
						{ required: true, message: '请输入参数名称', trigger: 'blur' }
					]
				},
				//控制编辑对话框的显示与隐藏
				editDialogVisible:false,
				//编辑的表单数据对象
				editForm:{
					
				},
				// 修改的表单验证规则
				editFormRules:{
					attr_name:[
						{ required: true, message: '请输入参数名称', trigger: 'blur' }
					]
				},
				
				
			}
		},
		created() {
			this.paramsCateList()
		},
		methods: {
			async paramsCateList() {
				const {
					data: res
				} = await this.$http.get('categories')

				if (res.meta.status !== 200) {
					return this.$message.error('获取商品分类数据失败！')
				} else {
					this.catelist = res.data
				}
			},
			//监听联级输入框改变
			handleChange() {
				this.getParamsData()
			},
			//监听tab页签的改变
			handleClick() {
				this.getParamsData()
			},
			//获取页签的数据
			async getParamsData() {
				if(this.selectedCateKeys.length !== 3) {
					this.selectedCateKeys = []
					this.manyTableData = []
					this.nolyTableData = []
				}
				const {data:res} = await this.$http.get(`categories/${this.cateId}/attributes`
				,{params:{sel:this.activeName}})
				if(res.meta.status !== 200) {
					return this.$message.error('获取页签数据失败！')
				}else {
					res.data.forEach(item => {
						item.attr_vals = item.attr_vals ? item.attr_vals.split(',') : [],
						item.inputVisible = false
						item.inputValue = ''
					})
					
					if(this.activeName === 'many') {
						this.manyTableData = res.data
					}else {
						this.nolyTableData = res.data
					}
					
				}
				
			},
			//监听添加对话框的关闭事件
			addDialogClosed() {
				this.$refs.addFormRef.resetFields()
			},
			//点击按钮添加参数
			addParams() {
				this.$refs.addFormRef.validate(async valid => {
					if(!valid) return
					const {data:res} = await this.$http.post(`categories/${this.cateId}/attributes`,{
						attr_name:this.addForm.attr_name,
						attr_sel:this.activeName
					})
					
					if(res.meta.status !== 201) {
						return this.$message.error('添加参数失败！')
					}else {
						this.$message.success('添加参数成功')
						this.addDialogVisible = false
						this.getParamsData()
					}
				})
			},
			//监听点击编辑按钮
			async showEditDialog(id) {
				const {data:res} = await this.$http.get(`categories/${this.cateId}/attributes/${id}`
				,{params:{attr_sel:this.activeName}})
				if(res.meta.status !== 200) {
					return this.$message.error('获取参数数据失败!')
				}else {
					this.editForm = res.data
				}
				this.editDialogVisible = true
			},
			//重置修改的表单
			editDialogClosed() {
				this.$refs.editFormRef.resetFields()
			},
			//点击按钮修改参数信息
			editParams() {
				this.$refs.editFormRef.validate(async valid => {
					if(!valid) return
					const {data:res} = await this.$http.put(`categories/${this.cateId}/attributes/${this.editForm.attr_id}`,{
						attr_name:this.editForm.attr_name,
						attr_sel:this.activeName
					})
					
					if(res.meta.status !== 200) {
						return this.$message.error('修改参数失败！')
					}else {
						this.$message.success('修改参数成功')
						this.editDialogVisible = false
						this.getParamsData()
					}
				})
			},
			//根据id删除参数
			async removeParams(attr_id) {
				const confirmResukt = await this.$confirm('此操作将永久删除该删除, 是否继续?', '提示', {
				  confirmButtonText: '确定',
				  cancelButtonText: '取消',
				  type: 'warning'
				}).catch(err => err)
				
				if(confirmResukt !== 'confirm') {
					return this.$message.info('已取消！')
				}else {
					const {data:res} = await this.$http.delete(`categories/${this.cateId}/attributes/${attr_id}`)
					
					if(res.meta.status !== 200) {
						return this.$message.error('删除参数失败！')
					}else {
						this.$message.success('删除参数成功')
						this.getParamsData()
					}
				}
			},
			//文本框失去了焦点或按下了Enter
			async handleInputConfirm(row) {
				if(row.inputValue.trim().length === 0) {
					row.inputValue = ''
					row.inputVisible = false
					return
				} else {
					row.attr_vals.push(row.inputValue.trim())
					row.inputValue = ''
					row.inputVisible = false
					this.saveAttrVals(row)
				}
			},
			//编辑提交参数
			async saveAttrVals(row) {
				const {data:res} = await this.$http.put(`categories/${this.cateId}/attributes/${row.attr_id}`,
					{
						attr_name:row.attr_name,
						attr_sel:row.attr_sel,
						attr_vals:row.attr_vals.join(',')
					})
					if(res.meta.status !== 200) {
						return this.$message.error('修改参数项失败！')
					}else {
						return this.$message.success('修改参数项成功')
					}
			},
			//点击按钮显示文本输入框
			showInput(row) {
				row.inputVisible = true
				//让文本框自动获取焦点
				this.$nextTick(_ => {
			    this.$refs.saveTagInput.$refs.input.focus();
			  });
			},
			//删除参数项
			async handleClose(row,i) {
				row.attr_vals.splice(i,1)
				this.saveAttrVals(row)
			}
		},
		computed: {
			//判断按是否被禁用
			isBtnDisabled() {
				if(this.selectedCateKeys.length !== 3) {
					return true
				}else {
					return false
				}
			},
			cateId() {
				if(this.selectedCateKeys.length === 3) {
					return this.selectedCateKeys[2]
				}else {
					null
				}
			},
			titleText() {
				if(this.activeName === 'many') {
					return '动态参数'
				}else {
					return '静态属性'
				}
					
			}
		}
	}
</script>

<style scoped>
  .car_dr {
	 margin-top: 15px;
 }
  .cat_opt {
	  margin: 15px 0;
  }
	.el-tag {
		margin: 0 8px;
	}
	.input-new-tag {
		width: 150px;
	}
</style>
